ABB REL 551-C1*2.5 - Logic Diagram

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Self supervision with internal event recorder
(INT)
Chapter 3
Common functions
5.3 Logic diagram
Figure 13: Hardware self-supervision, potential-free alarm contact.
Power supply fault
Watchdog
TX overflow
Master resp.
Supply fault
ReBoot I/O
Checksum fault
Supply fault
Parameter check
Power supply
module
I/O nodes
A/D conv.
module
Main CPU
&
Fault
Fault
Fault
Fault
INTERNAL
FAIL
I/O nodes = BIM, BOM, IOM
PSM, MIM or DCM
DSP = Digital Signal Processor
xxxx = Inverted signal
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